You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.7 KiB
83 lines
2.7 KiB
9 months ago
|
From 9bacf8c4104ff3cff2e0e2c2179ec4fda633167f Mon Sep 17 00:00:00 2001
|
||
|
|
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
|
||
|
|
Date: Mon, 16 Jan 2023 07:51:08 -0500
|
||
|
|
Subject: [PATCH 05/11] KVM: keep track of running ioctls
|
||
|
|
|
||
|
|
RH-Author: Emanuele Giuseppe Esposito <eesposit@redhat.com>
|
||
|
|
RH-MergeRequest: 247: accel: introduce accelerator blocker API
|
||
|
|
RH-Bugzilla: 2161188
|
||
|
|
RH-Acked-by: David Hildenbrand <david@redhat.com>
|
||
|
|
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
|
||
|
|
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
|
||
|
|
RH-Commit: [2/3] 357508389e2a0fd996206b406e9e235e50b5f0b6
|
||
|
|
|
||
|
|
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2161188
|
||
|
|
|
||
|
|
commit a27dd2de68f37ba96fe164a42121daa5f0750afc
|
||
|
|
Author: Emanuele Giuseppe Esposito <eesposit@redhat.com>
|
||
|
|
Date: Fri Nov 11 10:47:57 2022 -0500
|
||
|
|
|
||
|
|
KVM: keep track of running ioctls
|
||
|
|
|
||
|
|
Using the new accel-blocker API, mark where ioctls are being called
|
||
|
|
in KVM. Next, we will implement the critical section that will take
|
||
|
|
care of performing memslots modifications atomically, therefore
|
||
|
|
preventing any new ioctl from running and allowing the running ones
|
||
|
|
to finish.
|
||
|
|
|
||
|
|
Signed-off-by: David Hildenbrand <david@redhat.com>
|
||
|
|
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
|
||
|
|
Message-Id: <20221111154758.1372674-3-eesposit@redhat.com>
|
||
|
|
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
|
|
|
||
|
|
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
|
||
|
|
---
|
||
|
|
accel/kvm/kvm-all.c | 7 +++++++
|
||
|
|
1 file changed, 7 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
|
||
|
|
index 8f2a53438f..221aadfda7 100644
|
||
|
|
--- a/accel/kvm/kvm-all.c
|
||
|
|
+++ b/accel/kvm/kvm-all.c
|
||
|
|
@@ -2337,6 +2337,7 @@ static int kvm_init(MachineState *ms)
|
||
|
|
assert(TARGET_PAGE_SIZE <= qemu_real_host_page_size);
|
||
|
|
|
||
|
|
s->sigmask_len = 8;
|
||
|
|
+ accel_blocker_init();
|
||
|
|
|
||
|
|
#ifdef KVM_CAP_SET_GUEST_DEBUG
|
||
|
|
QTAILQ_INIT(&s->kvm_sw_breakpoints);
|
||
|
|
@@ -3018,7 +3019,9 @@ int kvm_vm_ioctl(KVMState *s, int type, ...)
|
||
|
|
va_end(ap);
|
||
|
|
|
||
|
|
trace_kvm_vm_ioctl(type, arg);
|
||
|
|
+ accel_ioctl_begin();
|
||
|
|
ret = ioctl(s->vmfd, type, arg);
|
||
|
|
+ accel_ioctl_end();
|
||
|
|
if (ret == -1) {
|
||
|
|
ret = -errno;
|
||
|
|
}
|
||
|
|
@@ -3036,7 +3039,9 @@ int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
|
||
|
|
va_end(ap);
|
||
|
|
|
||
|
|
trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg);
|
||
|
|
+ accel_cpu_ioctl_begin(cpu);
|
||
|
|
ret = ioctl(cpu->kvm_fd, type, arg);
|
||
|
|
+ accel_cpu_ioctl_end(cpu);
|
||
|
|
if (ret == -1) {
|
||
|
|
ret = -errno;
|
||
|
|
}
|
||
|
|
@@ -3054,7 +3059,9 @@ int kvm_device_ioctl(int fd, int type, ...)
|
||
|
|
va_end(ap);
|
||
|
|
|
||
|
|
trace_kvm_device_ioctl(fd, type, arg);
|
||
|
|
+ accel_ioctl_begin();
|
||
|
|
ret = ioctl(fd, type, arg);
|
||
|
|
+ accel_ioctl_end();
|
||
|
|
if (ret == -1) {
|
||
|
|
ret = -errno;
|
||
|
|
}
|
||
|
|
--
|
||
|
|
2.37.3
|
||
|
|
|